Saich Period 3

The economy has been improved, but more industrial wastes are coming out from everywhere.

Climate Change Greenhouse Gas (CCGG), which is produced by Elena Tan, Julia Song, and Raymond Huo, is to reduce the effects of global warming which are climate change and greenhouse gas emissions.

CLIMATE CHANGE
Climate change is one of the greatest environmental, social and economic threats facing the planet. The warming of the climate system is unpredictable, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising global mean sea level. The Earth's average surface temperature has risen by 0.76° C since 1850. Most of the warming that has occurred over the last 50 years is very likely to have been caused by human activities.
Human activities that contribute to climate change include mainly the burning of fossil fuels, agriculture and land-use changes like deforestation. These cause emissions of carbon dioxide (CO2), the main gas responsible for climate change, as well as of other 'greenhouse' gases. To stop the effects of global warming, global greenhouse gas emissions must be reduced by a great amount.
The Earth’s climate is influenced by many factors, mainly by the amount of energy coming from the sun, but also by factors such as the amount of greenhouse gases and aerosols in the atmosphere, and the properties of the Earth’s surface, which determine how much of this solar energy is kept or reflected back to space.
Regional climate change is already affecting many natural systems. For instance, it is increasingly being observed that snow and ice are melting and frozen ground is thawing, hydrological and biological systems are changing and in some cases being disrupted, migrations are starting earlier, and species' geographic ranges are shifting towards the poles.

GREENHOUSE GASES
One of the main greenhouse gases is carbon dioxide, which is Co2. As trees grow they take in CO2 from the air and when the wood dies the CO2 is returned to the air. Forest Clearance and deforestation is also increasing the latter half of the process, adding to the CO2 in the atmosphere.

While CO2 contributes about 50% to greenhouse gases, the other gases include methane, nitrous oxide, and CFCs. Overall, methane is one of the most serious issues relating to Global Warming. The main source of methane is agricultural activity in the atmosphere and it is released from wetlands such as rice paddies and particularly cud-chewing species like cows. The problem with methane is that as the world population increases, agricultural activity must also increase and so emissions of methane will also increase.